1 files changed, 27 insertions, 1 deletions
diff --git a/zephyr/mphalport.h b/zephyr/mphalport.h
index 1bb64e000..fafbb9ebe 100644
--- a/zephyr/mphalport.h
+++ b/zephyr/mphalport.h
@@ -1 +1,27 @@
-static inline mp_uint_t mp_hal_ticks_ms(void) { return 0; }
+#include <zephyr.h>
+#include "lib/utils/interrupt_char.h"
+
+static inline mp_uint_t mp_hal_ticks_us(void) {
+    return sys_tick_get() * sys_clock_us_per_tick;
+}
+
+static inline mp_uint_t mp_hal_ticks_ms(void) {
+    int64_t us = sys_tick_get() * sys_clock_us_per_tick;
+    mp_int_t ms = us / 1000;
+    return ms;
+}
+
+static inline mp_uint_t mp_hal_ticks_cpu(void) {
+    // ticks_cpu() is defined as using the highest-resolution timing source
+    // in the system. This is usually a CPU clock, but doesn't have to be,
+    // here we just use Zephyr hi-res timer.
+    return sys_cycle_get_32();
+}
+
+static inline void mp_hal_delay_us(mp_uint_t delay) {
+    k_busy_wait(delay);
+}
+
+static inline void mp_hal_delay_ms(mp_uint_t delay) {
+    k_sleep(delay);
+}